OTHER INTANGIBLE ASSETS, NET

12 Months Ended

Dec. 31, 2015

Intangible Assets, Net (Excluding Goodwill) [Abstract]

OTHER INTANGIBLE ASSETS, NET

8. OTHER INTANGIBLE ASSETS, NET

Intangible assets are generally the result of acquisitions and consist primarily of purchased technology, customer related intangibles, and trademarks. Intangible assets are amortized over useful lives that generally range between 1 and 20 years.

The following tables present the cumulative composition of the Corporation’s intangible assets as of December 31, 2015 and December 31, 2014, respectively.

	2015							2014
(In thousands)	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net
Technology	$	171,382	$	(91,430	)	$	79,952	$	178,369	$	(84,584	)	$	93,785
Customer related intangibles	357,538		(140,816		)	216,722		356,844		(122,920		)	233,924
Other intangible assets	37,200		(23,111		)	14,089		38,460		(16,942		)	21,518
Total	$	566,120	$	(255,357	)	$	310,763	$	573,673	$	(224,446	)	$	349,227

Amortization expense from continuing operations for the years ended December 31, 2015, 2014, and 2013 were $34.8 million, $38.3 million, and $39.0 million, respectively. The estimated future amortization expense of intangible assets over the next five years is as follows:

(In thousands)
2016	$	33,535
2017	33,051
2018	31,965
2019	30,167
2020	28,175